SIMPLIFY SPORADIC SCHEDULER DESIGN

```
Description: I have been planning to re-implement sporadic scheduling for
some time. I believe that the current implementation is
unnecessarily complex. There is no clear statement for the
requirements of sporadic scheduling that I could find, so I
based the design on some behaviors of another OS that I saw
published (QNX as I recall).

But I think that the bottom line requirement for sporadic
scheduling is that is it should make a best attempt to
control a fixed percentage of CPU bandwidth for a task in
during an interval only by modifying it is priority between
a low and a high priority. The current design involves
several timers: A "budget" timer plus a variable number of
"replenishment" timers and a lot of nonsense to duplicate QNX
behavior that I think I not necessary.

It think that the sporadic scheduler could be re-implemented
with only the single "budget" timer. Instead of starting a
new "replenishment" timer when the task is resumed, that
single timer could just be extended.
Status: Open
Priority: Low. This is an enhancement. And does anyone actually use
the sporadic scheduler?
```